This song is symbolic of the war. "Uuji" means "sugar cane" so "Uuji forest" would mean "sugarcane field."
And the deigo flower is said to bring destruction. So basically, the song is saying "island song, ride the wind, and tell the
mainland of the sorrows of Okinawa."

The deigo flower bloomed, called the wind, and now the storm is here

The deigo flower bloomed, called the wind, and now the storm is here
The sadness that repeats itself, is like the waves which cross the island

I met you in the forest of Uuji
And under the Uuji tree, I say goodbye to you forever

Island song, ride the wind, and cross the seas with the birds
Island song, ride the wind, and send along my tears

The deigo flowers scattered and died, and now only the small waves sway
The small happiness is like a flower from the bubbly waves

I sang with you in the Uuji forest
And now, I part with you forever

Island song, ride the wind, and cross the seas with the birds
Island song, ride the wind, and send along my love

To the sea, universe, God, life,
Please let there be an evening calm forever

Island song, ride the wind, and cross the seas with the birds
Island song, ride the wind, and send along my love

Island song, ride the wind, and cross the seas with the birds
Island song, ride the wind, and send along my love